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A reactor for integrating with U{CFRunLoop<http://bit.ly/cfrunloop>}, the
CoreFoundation main loop used by MacOS X.
This is useful for integrating Twisted with U{PyObjC<http://pyobjc.sf.net/>}
applications.
t installt CFReactoriN( t
implements( t
IReactorFDSet( t PosixReactorBaset _Waker( t _NO_FILEDESC( t log( t CFRunLoopAddSourcet CFRunLoopRemoveSourcet CFRunLoopGetMaint CFRunLoopRunt
CFRunLoopStopt CFRunLoopTimerCreatet CFRunLoopAddTimert CFRunLoopTimerInvalidatet kCFAllocatorDefaultt kCFRunLoopCommonModest CFAbsoluteTimeGetCurrent( t CFSocketCreateWithNativet CFSocketSetSocketFlagst CFSocketEnableCallBackst CFSocketCreateRunLoopSourcet CFSocketDisableCallBackst CFSocketInvalidatet kCFSocketWriteCallBackt kCFSocketReadCallBackt kCFSocketConnectCallBackt* kCFSocketAutomaticallyReenableReadCallBackt+ kCFSocketAutomaticallyReenableWriteCallBacki i i t
_WakerPlusc B s e Z d Z d Z RS( s
The normal Twisted waker will simply wake up the main loop, which causes an
iteration to run, which in turn causes L{PosixReactorBase.runUntilCurrent}
to get invoked.
L{CFReactor} has a slightly different model of iteration, though: rather
than have each iteration process the thread queue, then timed calls, then
file descriptors, each callback is run as it is dispatched by the CFRunLoop
observer which triggered it.
So this waker needs to not only unblock the loop, but also make sure the
work gets done; so, it reschedules the invocation of C{runUntilCurrent} to
be immediate (0 seconds from now) even if there is no timed call work to
do.
c C s# t j | } | j j t | S( sw
Wake up the loop and force C{runUntilCurrent} to run immediately in the
next timed iteration.
( R t doReadt reactort _scheduleSimulatet True( t selft result( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR @ s ( t __name__t
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The CoreFoundation reactor.
You probably want to use this via the L{install} API.
@ivar _fdmap: a dictionary, mapping an integer (a file descriptor) to a
4-tuple of:
- source: a C{CFRunLoopSource}; the source associated with this
socket.
- socket: a C{CFSocket} wrapping the file descriptor.
- descriptor: an L{IReadDescriptor} and/or L{IWriteDescriptor}
provider.
- read-write: a 2-C{list} of booleans: respectively, whether this
descriptor is currently registered for reading or registered for
writing.
@ivar _idmap: a dictionary, mapping the id() of an L{IReadDescriptor} or
L{IWriteDescriptor} to a C{fd} in L{_fdmap}. Implemented in this
manner so that we don't have to rely (even more) on the hashability of
L{IReadDescriptor} providers, and we know that they won't be collected
since these are kept in sync with C{_fdmap}. Necessary because the
.fileno() of a file descriptor may change at will, so we need to be
able to look up what its file descriptor I{used} to be, so that we can
look it up in C{_fdmap}
@ivar _cfrunloop: the L{CFRunLoop} pyobjc object wrapped by this reactor.
@ivar _inCFLoop: Is L{CFRunLoopRun} currently running?
@type _inCFLoop: C{bool}
@ivar _currentSimulator: if a CFTimer is currently scheduled with the CF
run loop to run Twisted callLater calls, this is a reference to it.
Otherwise, it is C{None}
c C sb i | _ i | _ | d k r' t } n | | _ | d k rH t } n | | _ t j | d S( N( t _fdmapt _idmapt NoneR t _runnerR
t
_cfrunloopR t __init__( R# t runLoopt runner( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR- s s c C sB | j s> t | | _ | j j | j | j | j n d S( s
Override C{installWaker} in order to use L{_WakerPlus}; otherwise this
should be exactly the same as the parent implementation.
N( t wakerR t _internalReaderst addt addReader( R# ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt installWaker s c C s | \ } } | | j k r2 t | j | t d Sd } t } | j | \ }
} } }
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The socket callback issued by CFRunLoop. This will issue C{doRead} or
C{doWrite} calls to the L{IReadDescriptor} and L{IWriteDescriptor}
registered with the file descriptor that we are being notified of.
@param cfSocket: The L{CFSocket} which has got some activity.
@param callbackType: The type of activity that we are being notified
of. Either L{kCFSocketReadCallBack} or L{kCFSocketWriteCallBack}.
@param ignoredAddress: Unused, because this is not used for either of
the callback types we register for.
@param ignoredData: Unused, because this is not used for either of the
callback types we register for.
@param context: The data associated with this callback by
L{CFSocketCreateWithNative} (in L{CFReactor._watchFD}). A 2-tuple
of C{(int, CFRunLoopSource)}.
Nii ( R( R R, R R* t Falset filenoR R t _READR t callWithLoggerR t _WRITEt doWritet syst exc_infot errt _disconnectSelectable( R# t cfSockett callbackTypet ignoredAddresst ignoredDatat contextt fdt
smugglesrct whyt isReadt srct sktt readWriteDescriptort rw( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt _socketCallback s0
c C s4 | d k r t d n | | j k rF | j | \ } } } } n g } | j | t t | t t Bt B| j | } t | t
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t | d } | j | t | j | t t | t t Bt B t t g } | | j t | <| | | | f | j | <t | | j | <t | | d S( s
Register a file descriptor with the L{CFRunLoop}, or modify its state
so that it's listening for both notifications (read and write) rather
than just one; used to implement C{addReader} and C{addWriter}.
@param fd: The file descriptor.
@type fd: C{int}
@param descr: the L{IReadDescriptor} or L{IWriteDescriptor}
@param flag: the flag to register for callbacks on, either
L{kCFSocketReadCallBack} or L{kCFSocketWriteCallBack}
is Invalid file descriptor.i N( t RuntimeErrorR( t appendR R R R R RL R R R t _preserveSOErrorR R R, R R R5 R) t idR" t _flag2idxR ( R# RD t descrt flagRH t cfst gotdescrRK t ctx( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt _watchFD s6
c C s i t t 6t t 6| S( s-
Convert a C{kCFSocket...} constant to an index into the read/write
state list (C{_READ} or C{_WRITE}) (the 4th element of the value of
C{self._fdmap}).
@param flag: C{kCFSocketReadCallBack} or C{kCFSocketWriteCallBack}
@return: C{_READ} or C{_WRITE}
( R7 R R9 R ( R# RS ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyRQ s
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Unregister a file descriptor with the L{CFRunLoop}, or modify its state
so that it's listening for only one notification (read or write) as
opposed to both; used to implement C{removeReader} and C{removeWriter}.
@param fd: a file descriptor
@type fd: C{int}
@param descr: an L{IReadDescriptor} or L{IWriteDescriptor}
@param flag: L{kCFSocketWriteCallBack} L{kCFSocketReadCallBack}
Ni( RP R) R( R R5 RQ R7 R9 R R, R R ( R# RD RR RS t realfdRH RT RK ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt
_unwatchFD s
c C s | j | j | t d S( s7
Implement L{IReactorFDSet.addReader}.
N( RW R6 R ( R# t reader( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR3 0 s c C s | j | j | t d S( s7
Implement L{IReactorFDSet.addWriter}.
N( RW R6 R ( R# t writer( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt addWriter7 s c C s | j | j | t d S( s:
Implement L{IReactorFDSet.removeReader}.
N( RY R6 R ( R# RZ ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt removeReader> s c C s | j | j | t d S( s:
Implement L{IReactorFDSet.removeWriter}.
N( RY R6 R ( R# R[ ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt removeWriterE s c C s| t g | j j D] \ } } } } | ^ q } | t | j 8} x( | D] } | j | | j | qN Wt | S( s7
Implement L{IReactorFDSet.removeAll}.
( t setR( t valuesR1 R] R^ t list( R# RH RT RR RK t allDesct desc( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt removeAllL s 4
c C s6 g | j j D]" \ } } } } | t r | ^ q S( s8
Implement L{IReactorFDSet.getReaders}.
( R( R` R7 ( R# RH RT RR RK ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt
getReadersX s "c C s6 g | j j D]" \ } } } } | t r | ^ q S( s8
Implement L{IReactorFDSet.getWriters}.
( R( R` R9 ( R# RH RT RR RK ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt
getWriters` s "c C s t j | | } | j | S( sw
Override L{PosixReactorBase}'s implementation of L{IDelayedCall.reset}
so that it will immediately reschedule. Normally
C{_moveCallLaterSooner} depends on the fact that C{runUntilCurrent} is
always run before the mainloop goes back to sleep, so this forces it to
immediately recompute how long the loop needs to stay asleep.
( R t _moveCallLaterSoonerR! ( R# t tpleR$ ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyRg h s
c C s( t | _ z | j Wd t | _ Xd S( s
Run the runner (L{CFRunLoopRun} or something that calls it), which runs
the run loop until C{crash()} is called.
N( R" t _inCFLoopR+ R5 ( R# ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt mainLoopw s c s j d k r( t j d _ n j } | rC d } n | d k r t | } f d } t t | d d d | d } _ t j | t n d S( sU
Schedule a call to C{self.runUntilCurrent}. This will cancel the
currently scheduled call if it is already scheduled.
@param force: Even if there are no timed calls, make sure that
C{runUntilCurrent} runs immediately (in a 0-seconds-from-now
{CFRunLoopTimer}). This is necessary for calls which need to
trigger behavior of C{runUntilCurrent} other than running timed
calls, such as draining the thread call queue or calling C{crash()}
when the appropriate flags are set.
@type force: C{bool}
g c s! d _ j j d S( N( R* t _currentSimulatort runUntilCurrentR! ( t cftimert extra( R# ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt simulate s
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Rk R* R t timeoutR R
R R R, R ( R# t forceRp t fireDateRo t c( ( R# s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR! s
c O s) t j | | | | | } | j | S( s6
Implement L{IReactorTime.callLater}.
( R t callLaterR! ( R# t _secondst _ft argst kwt delayedCall( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyRt s
c C s t j | | j t d S( s1
Implement L{IReactorCore.stop}.
N( R t stopR! R" ( R# ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyRz s
c C sL | j } t j | | j r, | j n | rH | j d | j n d S( s1
Implement L{IReactorCore.crash}
i N( t _startedR t crashRi t _stopNowRt ( R# t
wasStarted( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR| s
c C s t | j d S( sJ
Immediately stop the CFRunLoop (which must be running!).
N( R R, ( R# ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR} s i c C s! | j | | j | j d S( s
Emulate the behavior of C{iterate()} for things that want to call it,
by letting the loop run for a little while and then scheduling a timed
call to exit it.
N( Rt R} Rj ( R# t delay( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt iterate s N( R% R& R' R R R* R- R4 RL RW RQ RY R3 R\ R] R^ Rd Re Rf Rg R5 Ri Rj Rk R! Rt Rz R| R} R ( ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR K s2 $
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Configure the twisted mainloop to be run inside CFRunLoop.
@param runLoop: the run loop to use.
@param runner: the function to call in order to actually invoke the main
loop. This will default to L{CFRunLoopRun} if not specified. However,
this is not an appropriate choice for GUI applications, as you need to
run NSApplicationMain (or something like it). For example, to run the
Twisted mainloop in a PyObjC application, your C{main.py} should look
something like this::
from PyObjCTools import AppHelper
from twisted.internet.cfreactor import install
install(runner=AppHelper.runEventLoop)
# initialize your application
reactor.run()
@return: The installed reactor.
@rtype: L{CFReactor}
R. R/ i( t installReactor( R t twisted.internet.mainR ( R. R/ R R ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyR s
(, R' t __all__R; t zope.interfaceR t twisted.internet.interfacesR t twisted.internet.posixbaseR R R t twisted.pythonR t CoreFoundationR R R
R R R
R R R R R t CFNetworkR R R R R R R R R R R R7 R9 RO R R R* R ( ( ( s> /usr/lib/python2.7/dist-packages/twisted/internet/cfreactor.pyt <module> s" LL